Climate averages 1991–2020

Barreiras weather
in March.

A hot, wet month: one of the coolest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 30.1°C Daytime mean, March
Average low 21.7°C Night-time mean, March
Rainfall 142 mm 17 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Barreiras · average highYear overview

March is a hot month in Barreiras: daytime highs average 30.1°C and nights cool to about 21.7°C. By daytime temperature it is one of the coolest months of the year.

Expect about 142 mm of rain on roughly 17 days, which makes March a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average March day.

The nearest other city in this atlas is Luis Eduardo Magalhães (87 km away). In March its highs average 27.8°C, 2.3°C cooler than Barreiras, with 168 mm of rain.

Among the 448 cities listed in Brazil, Barreiras ranks joint 40th of 448 for the warmest March highs and joint 175th of 448 for the driest March (rainfall, lowest first). The mean March high of those 448 cities is 27.9°C; Barreiras is 2.2°C warmer than that mean.

From March to April, average highs rise by 0.1°C to 30.2°C, and monthly rainfall falls from 142 mm to 68 mm.

The annual picture

March in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 152025303540 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 2000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Barreiras climate table

1991–2020
Monthly climate averages for Barreiras, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 30.2°C21.8°C21.8°C13916.412.713 h
February 30.1°C21.7°C21.7°C12315.812.512 h
March, selected 30.1°C21.7°C21.7°C14216.512.212 h
April 30.2°C21.6°C21.6°C6810.211.812 h
May 30.4°C20.9°C20.9°C183.111.612 h
June 30.1°C19.8°C19.8°C1.50.311.411 h
July 30.2°C19.0°C19.0°C0.20.011.511 h
August 31.7°C19.6°C19.6°C0.50.111.712 h
September 33.8°C21.6°C21.6°C8.21.112.012 h
October 34.1°C23.1°C23.1°C516.512.412 h
November 31.3°C22.5°C22.5°C15414.112.713 h
December 30.7°C22.0°C22.0°C14314.712.813 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

March in nearby cities

Distance from Barreiras

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Barreiras) is explained once on the Barreiras year overview and on the Sources, method and limits page.